I've recently replaced the lamp with an OEM Samsung (and reset the counter) within the past month.
Last week, I replaced the color wheel - it was still operational when I removed it, but the bearings were starting to fail.
This set is now giving me fits.
Sometimes it will stay on for hours, and sometimes after about 30-45 minutes before the 3 blinking lights.
When it's on, everything appears to be functioning normally.
All of my inputs are typically switched through my Yamaha AV receiver, and the only input that I use on the TV is HDMI1.
What are your thoughts as to the next possible cause? Power supply? Temp sensor? Ballast?